Someone chose those definitions and in doing so left out others. If you included all of the definitions of "worship" that were not chosen alongside the basic ones included on dictionary.com, you would see more of the meaning of the word.

It appears to me that you're the one with the unnatural bias for all things Webster's, especially when their etymology section is known to be quite limited and the whole thing has an American slant (particularly compared with the OED).

Oh, and no we are not speaking Middle English and it wasn't spoken in the colonies...but it was once spoken by Christians who shaped our ideas of worship, so I would say that the origin of the word is important.